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Chapter 4. Installing and configuring z/VM 47
4.5.4 Shutting down and reIPLing the system
You may want to be able to shut down and reIPL z/VM without having to access the HMC.
Often, the HMC will be logged off and thus the Integrated 3270 console (SYSG) will not be
available.
Because of these factors, it is useful to use the System Console (SYSC, which has a title of
Operating System Messages on the HMC) in order to shut down z/VM and reIPL it without
needing to use the console. This console is always accessible, whether you are logged on to
the HMC or not.
z/VM messages during both the shutdown and reIPL process will be written to the system
console, but often you will be able to ignore them; you just want your system back in a few
minutes over the network.
1. Pass the parameter IPLPARMS CONS=SYSC to the SHUTDOWN REPIL command:
==> shutdown reipl iplparms cons=sysc
You will lose your session, but it should come back in a few minutes as described. When
your system is back up, perform the following commands:
2. Start a 3270 session and logon as MAINT. This shows that there is TCP/IP access to z/VM.
3. Query the new VSWITCH:
==> q vswitch
VSWITCH SYSTEM VSW1 Type: VSWITCH Connected: 0 Maxconn: INFINITE
PERSISTENT RESTRICTED NONROUTER Accounting: OFF
VLAN Unaware
MAC address: 02-00-01-00-00-01
State: Ready
IPTimeout: 5 QueueStorage: 8
RDEV: 3024.P00 VDEV: 3024 Controller: DTCVSW2
RDEV: 3028.P00 VDEV: 3028 Controller: DTCVSW1 BACKUP
You should see that the VSWITCH VSW1 exists, that the OSA devices you specified are
being used and that there are two built-in VSWITCH controllers, DTCVSW1 and DTCVSW2.
4. Use the QUERY VDISK and QUERY RETRIEVE commands to see the changes made to the
Features statement in the SYSTEM CONFIG file:
==> q retrieve
99 buffers available. Maximum of 255 buffers may be selected.
==> q vdisk userlim
VDISK USER LIMIT IS INFINITE
==> q vdisk syslim
VDISK SYSTEM LIMIT IS INFINITE, 0 BLK IN USE
This shows that the changes to the SYSTEM CONFIG file have taken effect.
4.6 Adding paging volumes
The z/VM operating system resides on the first three CP volumes (or one volume, if you are
installing onto 3390-9s). z/VM 5.4 is installed with one full paging volume and one full spool
volume. A single spool volume is probably adequate for Linux needs, but a single paging
volume is probably not. We recommend that you add five paging volumes so you will have a
total of six (or one more 3390-9 if installing onto 3390-9s, which will give the same total of
20034 cylinders of page space).
- The Virtualization Cookbook 1
- Linux 5.2 3
- October 2008 3
- First Edition (October 2008) 4
- Contents 5
- Contents v 7
- Contents vii 9
- Trademarks 12
- The team that wrote this book 13
- Chapters and appendixes 15
- Conventions 17
- Comments welcome 17
- 1.1 What is virtualization 20
- 1.2 This book’s approach 21
- 1.4 Infrastructure design 22
- Planning 25
- 2.1 Bill of materials 26
- 2.2 z/VM conventions 27
- 2.3 Disk planning 28
- DASD versus SCSI/FCP 29
- 3390-3s versus 3390-9s 29
- Disk storage per Linux image 29
- 2.4 Memory planning 30
- 2.5 Password planning 30
- 2.6 Planning worksheets 31
- 2.7 Blank worksheets 34
- 2.7.2 z/VM DASD worksheet 35
- Configuring a desktop machine 37
- Figure 3-2 Setting logging 39
- Saving sessions 41
- 3.2 Setting up a VNC client 42
- 3.3 3270 emulators 43
- 4.1 Installing z/VM from DVD 46
- ==> instplan 50
- Running INSTDVD 52
- Figure 4-8 Load window 53
- ==> cold drain noautolog 54
- ==> no 54
- ==> disc 54
- 4.2 Configuring TCP/IP 56
- not specified 62
- 4.6 Adding paging volumes 65
- Using the CPFORMAT EXEC 67
- 4.6.4 Testing the changes 71
- 4.8.2 Testing the changes 78
- 4.9.1 VM security products 79
- ==> sampnss cms 86
- Servicing z/VM 89
- 5.1 Applying a PTF 90
- 6.4 Enabling the NFS server 106
- 7.2.3 Configuring VDISK swap 128
- 7.2.4 Configuring yum 128
- 7.2.5 Adding additional RPMs 129
- 7.2.10 Configuring SSH keys 134
- 4 6763) is running 135
- 8.2.4 Adding additional RPMs 145
- 8.2.8 Configuring SSH keys 145
- 8.2.9 Rebooting the system 146
- 8.2.10 Verifying the changes 146
- Detach the source disks 151
- Detach the target disks 154
- IPL the target system 154
- 9.3.2 Using the clone script 157
- FLASHCOPY 159
- Installation Server 159
- Master Image 159
- 9.5 Reviewing system status 163
- LNXMAINT 164
- Delete these 167
- Servicing Linux with Red Hat 171
- 12.1.2 Testing Apache 179
- 12.1.3 Turning on a firewall 179
- 12.1.6 Apache resources 182
- Start the LDAP service 184
- Deleting duplicate users 186
- Set a password 189
- 12.3.4 Adding a Samba user 191
- 12.3.6 Testing your changes 192
- 12.3.7 Configuring printing 193
- 12.4.1 Additional resources 194
- Linux kernel development 195
- Web development 195
- Miscellaneous recipes 197
- 13.1 Adding a logical volume 198
- Volume Group - optvg 200
- Creating a physical volume 204
- Extending the volume group 204
- /var/lib/ldap 205
- Configuring LDAP 206
- Configuring automount 207
- 13.4 Rescuing a Linux system 208
- Monitoring z/VM and Linux 211
- INIDICATE LOAD 212
- INDICATE QUEUES EXP 213
- Getting help 214
- Determining who is logged on 214
- Determining storage or memory 215
- Determining software level 215
- 14.2.3 Configuring PERFSVM 218
- Using a Web browser interface 220
- Using a 3270 interface 222
- 14.3 Monitoring Linux 223
- PURGE NSS NAME MONDCSS 228
- CP SAVESEG MONDCSS 228
- References 229
- Quick reference sheets 230
- Prefix commands 231
- :help give help 232
- Appendix B. z/VM source code 233
- The CPFORMAT EXEC 234
- The CHPW540 XEDIT macro 238
- The LABEL540 EXEC 241
- The LABEL540 XEDIT macro 243
- Linux source code 245
- Related publications 257
- Online resources 258
- How to get Redbooks 258
- Help from IBM 258
- Hat Enterprise Linux 5.2 265
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